CVE-2026-5430: WSO2 Multiple Products Path Traversal Vulnerability

1. In CISA KEVCISA KEV catalogue24 Sep
2. Exploited (reported): not seen
3. Scanning observedwatchTowr, via SecurityWeek16 Sep
4. Proof of concept public4 public GitHub repositories (unverified), listed by PoC-in-GitHub16 Sep
5. Not established: not seen

DescriptionNVD

The JWT authentication mechanism accepts tokens signed with algorithms other than those explicitly configured or supported. This allows an attacker to craft a JWT with an unsupported algorithm, which is then incorrectly validated, leading to unauthorized access. Successful exploitation of this vulnerability may result in unauthorized access to the system, including the potential compromise of administrative accounts and full account takeover. The CVSS score is adjusted to 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) in single-tenant deployments, reflecting that the impact is contained within a single security authority boundary.

1. 24 Sep
   CISA added it to the KEV catalogue CISA
2. 16 Sep
   watchTowr reported scanning, via SecurityWeek SecurityWeek
3. 16 Sep
   PoC-in-GitHub lists 4 public GitHub repositories (unverified) PoC-in-GitHub

CISA required action

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

• NVD entrynvd.nist.gov
• CISA KEV cataloguecisa.gov
• Vendor advisorysecurity.docs.wso2.com
• CVE recordcve.org
• Weakness CWE-347cwe.mitre.org